Transmission mechanism.



No. 856,272. PATENTED JUNE 11, 1907.

s. LIPPERT. TRANSMISSION MECHANISM.

APPLICATION FILED JUNE 22, 1906.

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APPLIOATIOH Hum mm: 22, 1905. V

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' I d do J 7i 7" I cwzvzay Zja'tfzess es UNITED STATES PATENT OFFICE.

SAMUEL LIPPERT, OF CLEVELAND, OHIO, ASSIGNOR TO THE RECIPROCAT- ING POWER AND PUMP COMPANY, OF CLEVELAND, OHIO, A CORPORA- TION OF OHIO.

Specification of Letters Patent.

Patented June 11, 1907.

Application flied June 22, 1906. Serial No. 266,626.

are to provide a mechanical movement;

whereby the shaft can be lifted, if vertical, to a predetermined height, by a slow and regular continuous movement, and released; at that height for a quick downward movement by gravity, to the oint of starting. The device is also adapte for similarly operating upon a horizontal shaft, when instrumentalities areprovided to return the shaft. The invention also com rises the peculiar form or construction of tiie divided or separable nut employed for this purpose.

I exemplify the invention in its use in transmitting power in a vertically reciprocating shaft, and in a horizontal shaft as hereinafter described and shown in the accomp anying drawings, and specifically pointed out in the claims.

Figure l is a vertical section of the device, showing the driving head and showing a pinion and driving shaft. Fig. 2 is plan view of the driving head of the transmission device, and Fig. 3 is a perspective view of the locking bars and supporting ring employed in the device. Fig. 4 is a plan view of large gear, and Fig. 5 is a perspective view of the device applied to an-oil well, and upon a horizontal reciprocating rod. Fig. 6 is a section through roller worms.

In these views 1, is the reciprocating shaft, provided with the screw threaded upper extremity 2, 3 is a frame through whichthe shaft passes, 4 is a gear wheel encircling the shaft, and mounted in this frame, 5 isa pinion upon a driving shaft 6, which communicates its motion to the gear wheel 4.

Upon this gear wheel are mounted in pivotal bearings 3, the worm or diagonally grooved or toothed rollers 7 one on each side of the reciprocating shaft and intermeshing with the screw thread of the rod.

In the figures the shaft is shown to be sup ported entirely by means of the worm rollers, and since these aremounted upon the large gear 4- and must revolve about the central shaft as the gear moves, they serve to comprise together a sectional nut one halfbeing on each side of the rod, the combined action of which as the gear wheel revolves will raise the rod in the same manner as a nut.

The worm rollers are provided I with ratchets 8 on their outer edges, and locking bars 9, resting upon the teeth of the opposite ratchets serve to revent them from moving C until the u ward 't of the stroke has been reached. t is necessary therefore that special means for releasin these ratchets should be employed to take e ect at the upper limit of the stroke of the reciprocating shaft, and alsomeans for securing the locking bars in the ratchets when the lower limit of the stroke has been reached. The required operation is effected by employing the worm rollers as a nut to raise the shaft and by means of a releasing device releasing the locking bars which secure the rollers from revolving, to permit the shaft to fall freely by gravity, as soon as the upperlimit of the stroke is reached. I accomplish these results in the following manner. The gear 4 is mounted upon friction rollers 1.0 upon the frame so as to move easily, a ring 11 connects the locking bars and as the shaft arrives at the upper limit of its stroke, a shoulder thereon 12 elevates the ring and locking bars and the weight of the shaft in falling will give the rollers a rapid movement on their pivots 'until the desired lower limit of its stroke isthe ring and attached bars temporarily after it is raised to release the ratchets, and until on each side of the shaft receives a s the bars are forced down again upon the ratchetsl Simple, devices for this purpose are shown to be springs 14 upon the pins which connect the u per rings. These springs bear upon the ugs 15- on the gear through which the pins also are guided. A gropve G, me 111 g the; frame which prevents the sha t from turning. I

In Fig. 5 a horizontal shaft 1 is shown, employed to work the bell crank in a pumping ack for an oil Well. i In this figure the rod 1 is attached to a connecting rod 21 which operates the bell crank 22, a motor 23 operates .the driving shaft 6, and the large gear 4 is sired to give a shaft a slow continnous movement in one direction and a quick return stroke, which can be utilized in many classes ofinachinery.

It is not essential that the driving and driven agency'should be gears as shown at 4 and 5, since any otherrotatable' device driven in any desired manner and bearing the worm rollers can be employed to operate in the same manner.

A reversal of the movements of the v a-- rious parts will also lie within the spirit of the invention. I 1

Having described the invention what I claim as new and.desire tosecure by Letters Patent is.

1. In a device for imparting a longitudinal movement in one direction to a shaft, the return movement of which is automatically accomplished, the combination with a shaft having a'screw threaded extremity, of a rotatable member thereon, worm rollers pivotal'ly mounted on said rotatable member, and in continuous engagement with said screw threaded shaft, a locking device arranged to prevent the rollers from turning dnring the non-automatic movement of the shaft, means for rotating the said rotatable member and rollers about the shaft while in the locked position and automatic means for releasing said rollers to turn freely on their pivots at the limit of the aforesaid non-automatic movement of the shaft.

2. In a transmission device adapted to give a longitudinal movement in one direction to a screw threaded rod or shaft, in combination with said shaft, a gear and driving I pinion. the said gear encircling said shaft,

'said' shaft, a screw imit howeverthe particular uses worm rollers mounted upon said gear and engaging said shaft on its sides, means for locking said rollers whereby they serve as a nut to give longitudinal movement to said shaft in one direction, and means for releasing said rollers to permit the shaft to move in the op- .posite direction substantially as described.

3. Ina

shaft, the combination with the frame through which said shaft vertical shaft, of a passes, a spur gearon sa1d frame encircling.

threaded extremity .to v

device for the purpose of giving longitudinal movement in one direction to a said shaft passing through a central opening in said gear, rollers mounted upon sa1d gear having diagonal teeth engaging said screw threaded shaft and means for locking said rollers from movement on the upward movement of the shaft and for releasing them 'to permit the shaft to fall b gravity, and for limiting the length of stro evof the shaft.

4.' An instrumentality for obtaining longi tudinal pressure in one direction upon a.

screw threaded shaft, consisting of the combination with the shaft, of worm rollers pivotally supported adjacent thereto, and enaging said screw threaded shaft, a support or said rollers through which said shaft passes, one of said portions, viz, said shaft and support being rotatable, in relation to the other, and means for securin said rollers from turning on their axes, and or releasing the same, substantially as described.

'5. In a device for the combination with'a screw threaded shaft, of roller worms engaging the shaft, a support the purpose set forth, 7

for 'said worms, means for revolving said support and roller worms about said shaft, and

. means for locking and for releasing said roller worms, substantially as described,

6. The combination in a power device, of a shaft or rod, said shaft being screw threaded,

'a wheel throughwhich said shaft passes, and revoluble around the shaft, worm rollers pivotally -moii2nted in said wheel and engaging said shaft, means for revolving s'aid wheel a locking device for said rollers, and means or releasing the same, substantially as described.

' 7. The combination with a screw threaded shaft, of a divisional nut therefor, comprising roller worms engaging said shaft, substantially as described,

8. The combination with a screw threaded shaft, of roller worms engaging said shaft, and a support for said roller worms, substantially as described.

9. The combination with a screw threaded shaft, of a divisional nut thereon, consisting of worm rollers, and a support therefor, one V of said elements being rotatable inrelation' to the other. 4

10. In a device for imparting a longitudinal movement in one direction to a shaft, the return movement of which is automatically accomplished, the combination with a shaft trolled b said shaft for releasing said rollers having a screw threaded extremity, of a rotato turn eely on their pivots at the limit oftable member thereon, Worm rollers pivotthe aforesaid non-automatic movement of the ally mounted on said rotatable member, and shaft. I 5 in continuous engagementwith said screw In testimony whereof I'hereunto set my threaded 1slhaftila loaking device afiranged kto hand. prevent t e ro ers om turnin urin t e non-automatic movement of the sfilaft, SAMUEL LIPPERI' means for rotating the said rotatable mem- Witnesses:

10 her and rollers about the shaft while in the WM. M. MONROE,

locked position and automatic means con- GEO. .O. WILLET. 

